Two new 3-D Cd(II) coordination polymers with p-phthalic acid (p-BDC) and 4,4΄-dipyridyl-amine (4,4΄-dpa), namely [Cd₂(p-BDC)₂(4,4΄-dpa)₂]_n 1 and {[Cd(p-BDC)(4,4΄-dpa) (H₂O)]·4H₂O}_n 2 were successfully synthesized under hydrothermal conditions at 120 and 140 °C. They were characterized by single-crystal X-ray diffraction, IR, PXRD and TGA. It was further characterized by Hirshfeld surface (HS) analysis for complex 2. The luminescent properties of the complexes have also been investigated.